Bacteria Cells :
Bacteria are single-celled organisms and represent some of the least complicated forms of life on earth and bacteria are called 'procaryotes' - which means they have a type of cell which has no internal, organizing structures (called organelles).  The DNA, RNA, ribosomes, and other important features of all cells, are simply in … Read more

The function of ciliated columnar epithelium(which lines the nasal cavities, trachea, and bronchi) is to protect these structures, secrete mucus by goblet cells, and move mucus by cilia.